<!DOCTYPE html>
<html lang="en">
  <head>
    <meta charset="UTF-8" />
    <meta http-equiv="X-UA-Compatible" content="IE=edge" />
    <meta name="viewport" content="width=device-width, initial-scale=1.0" />
    <title>Document</title>
  </head>
  <style>
    *{margin: 0;text-align: center;}
    #timer-container {
        padding: 30px;
    }
    #switch-button {
        text-shadow: 0 -1px 0 rgba(0,0,0,0.12);
        box-shadow: 0 2px 0 rgba(0,0,0,0.045);
        outline: none;
        margin-top: -10px
        display: inline-block;
        height: 30px;
        padding: 0 7px;
        font-size: 12px;
        font-family: Avenir,-apple-system,BlinkMacSystemFont,'Segoe UI','PingFang SC','Hiragino Sans GB','Microsoft YaHei','Helvetica Neue',Helvetica,Arial,sans-serif,'Apple Color Emoji','Segoe UI Emoji','Segoe UI Symbol',sans-serif;
        line-height: 30px;
        text-align: center;
        text-decoration: none;
        border: 1px solid #F44336;
        border-radius: 6px;
        background: #F44336;
        color: #FFF;
    }
  </style>
  <body>
    <div id="main">
      <div id="timer-container"></div>
      <button id="switch-button">start to work</button>
    </div>
    <script>
      require("./renderer.js");
    </script>
  </body>
</html>
